Where should I start with new energy vehicle maintenance?

　　Where exactly should I start with new energy vehicle maintenance? New energy vehicle maintenance needs to start from a number of key aspects to ensure maintenance quality and safety.

　　Maintenance personnel should have a solid basic knowledge. New energy vehicles and traditional fuel vehicles in the structure and principles are very different, maintenance personnel to understand the structural characteristics of new energy vehicles, understand the location of various components and interconnections. To be clear about how the battery stores and releases energy, how the motor converts electrical energy into mechanical energy, etc., so that when the failure occurs, according to the principle to analyse the possible problems.

　　Maintenance personnel should be skilled in the operation of testing equipment, which is a key step in the diagnosis of the problem. Just like a doctor using a variety of precision instruments to detect the disease, maintenance personnel need to use professional testing tools to accurately find out the vehicle’s fault code, so as to determine where the fault lies.

　　The high-voltage system of a new energy vehicle can provide high voltage, which may trigger the danger of electric shock if not careful. Before maintenance, switch off the high-voltage switch, cut off the power supply if the power system is involved in maintenance, wear insulated gloves and shoes and use insulated tools in accordance with the regulations, and comply with the safety regulations for electrical circuits. During the repair process, do not touch the high-voltage cables and plugs, they are generally presented as a striking orange colour, easy to identify.

　　For the disassembled parts of the battery assembly, must be placed separately, avoid being covered by other items, and even more to keep them away from sources of ignition and high heat objects, and should never be placed in the sun. Waterproof measures should not be ignored, both in the maintenance process and subsequent installation, to prevent short-circuit conditions.

　　For different types of new energy vehicles, it is necessary to master the corresponding core maintenance technology. For hybrid vehicles, it is necessary to be familiar with the power switching mechanism, and clearly know under what working conditions the vehicle switches from fuel mode to electric mode, and how the two modes work together. Pure electric vehicles should focus on the battery management system, and timely detection of hidden faults in the battery management system.

　　Where should I start with new energy vehicle maintenance? In the daily maintenance work, we should seriously sum up the lessons learnt, constantly improve our ability to accurately judge the type of fault, according to the fault phenomenon, combined with the knowledge and experience, quickly locate the fault point, and then carry out targeted treatment.